Dinosaurs: exploring prehistoric life and geological time

"With an exciting blend of vivid artwork and astonishing scientific facts, Dinosaurs journeys through Earth's inhospitable origins, when the only life-forms were single-celled organisms -- to the beginnings of life as we know it during the Paleozoic Era: plants covering whole continents with forests, winged insects taking to the sky, and seafaring vertebrates evolving to survive on land. Traveling forward in time, you'll explore the Mesozoic Era, when dinosaurs like the gargantuan Tyrannosaurus rex, the long-necked Brontosaurus, and the lumbering Stegosaurus walked the Earth. Then you'll venture into the Cenozoic Era's ice age, where you'll meet mammals like the Woolly Mammoth and early humans." -- Provided by publisher.